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Finding the Fourth Proportional to 66,377.13, 99,585.13 and 19,631.22

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Solution

The fourth proportional to 66,377.13, 99,585.13 and 19,631.22 is: 29,452.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,377.13 : 99,585.13 = 19,631.22 : x
  2. Step 2: Convert to fraction form
    66,377.13/99,585.13 = 19,631.22/x
  3. Step 3: Cross multiply
    66,377.13x = 99,585.13 × 19,631.22
  4. Step 4: Simplify right side
    66,377.13x = 1,954,977,595.76
  5. Step 5: Solve for x
    x = 1,954,977,595.76/66,377.13
  6. Step 6: Final answer
    x = 29,452.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.